I need help please with this chemistry work

Chemistry

1 answer:

Marysya12 [62]3 years ago

8 0

Answer:

question 1: 3

question 2: the number of Valence electrons in the atom

hope it helps

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andriy [413]

Answer:

reaction 1 and reaction 4 both are decomposition reactions

while reaction 2 is double displacement reaction and reaction 3 and 5 are combination reactions

5 0

3 years ago

What is the ratio of sodium ions to bromide ions in neutral sodium bromide?

frosja888 [35]

The ratio of sodium ions to bromide ions in neutral sodium bromide would be 1 is to 1. The molecular formula of sodium bromide would be NaBr where in every ion of Na there is one corresponding ion of bromide present. Hope this helps. Have a nice day.

4 0

4 years ago

Read 2 more answers

Identify the electromagnetic waves with the longest wavelengths and the electromagnetic waves with the shortest wavelength

Sholpan [36]

The Electromagnetic Spectrum consists of radio waves, microwaves (a type of radiowave), infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays. Waves with the longest wavelengths have the lowest frequencies. Waves with the shortest wavelengths have the highest frequencies.

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8 0

3 years ago

Read 2 more answers

12 = 3X X = 7X = 57 X = 11X = 27.7 X =

dybincka [34]

Answer:
1. $x=4$
2. $x=\frac{57}{7}$
3. $x=\frac{27.7}{11}$

Explanation:

Given the following questions:

$12=3x$
$7x=57$
$11x=27.7$

In order to find the answers to these questions, we have to recognize that in order to isolate the variable we need to divide on both sides.

Question one:
$12=3x$
$\frac{3x}{3} =\div3$
$12\div3=4$
$x=4$

Question two:
$7x=57$
$\frac{7x}{7} =\div7$
$57\div7=8.14285714=\frac{57}{7}$
$x=\frac{57}{7}$

Question three:
$11x=27.7$
$\frac{11x}{11} \div11$
$27.7\div11=2.51818182=\frac{27.7}{11}$
$x=\frac{27.7}{11}$

Hope this helps.